CN104747909A - Apparatus for controlling purging in a hydrogen storage system and method for the same - Google Patents
Apparatus for controlling purging in a hydrogen storage system and method for the same Download PDFInfo
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- CN104747909A CN104747909A CN201410837447.4A CN201410837447A CN104747909A CN 104747909 A CN104747909 A CN 104747909A CN 201410837447 A CN201410837447 A CN 201410837447A CN 104747909 A CN104747909 A CN 104747909A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04791—Concentration; Density
- H01M8/04798—Concentration; Density of fuel cell reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
- F17C2250/032—Control means using computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/01—Purifying the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0419—Fluid cleaning or flushing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
- Y10T137/4245—Cleaning or steam sterilizing
- Y10T137/4259—With separate material addition
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Abstract
A method of controlling purging in a hydrogen storage system includes determining the internal hydrogen purity of a hydrogen tank and adjusting a hydrogen purging cycle of the hydrogen tank depending on the determined internal hydrogen purity. An apparatus for controlling purging in a hydrogen storage system is also provided.
Description
Technical field
The present invention conceives the devices and methods therefor related to for controlling the purification in hydrogen storage system.Particularly, the present invention's design relates to by using purge valve can discharge the gas comprising impurity, to discharge the devices and methods therefor of the impurity remained in wherein from hydrogen storage system.
Background technique
Hydrogen fuel cell vehicle is the vehicle of use hydrogen as fuel and by using the electric charge drive motor generated when hydrogen and oxygen react to generate propelling force.
Hydrogen fuel cell vehicle must be equipped with hydrogen storage system.Recently, according to worldwide trend, the 700 Bagao pressure hydrogen storage systems representing the highest commercialization performance are installed in many vehicles.Because air rubber capsule is containing the composition that can damage fuel cell pack, the air atmosphere therefore in complete hydrogen storage system must be converted into hydrogen atmosphere.In order to replace the air in storage tank with hydrogen, high-pressure aerated/exhaust process must be repeated more than six hours by eight hours.Current needs are a kind of reduces the method for the time needed for air in hydrogen storage system of replacing completely with hydrogen or process.
If can implement to ensure another faster method of hydrogen purity, if or the part of the existing process strengthening hydrogen purity can be omitted, then not only can reduce the length of whole process, also can reduce manufacture cost significantly.
Summary of the invention
Therefore, the present invention has made an effort to solve the problem.Object of the present disclosure is to provide the devices and methods therefor that effectively can control hydrogen purification based on hydrogen purity, wherein improves hydrogen purity via the hydrogen process of filling repeated.Further object of the present disclosure be eliminate previously required for strengthening hydrogen purity thus the internal hydrogen purity in hydrogen storage system being manipulated to the demand of the additional process of predeterminated level.The present invention's design provides the method for the purification controlled in hydrogen storage system further.The method comprises internal hydrogen purity a) calculating hydrogen storage tank and hydrogen purification cycle b) adjusting hydrogen storage tank according to calculated internal hydrogen purity.
Above method step a) in, once determine that filling hydrogen stops, then can calculate the internal hydrogen purity of hydrogen storage tank.Determine that filling hydrogen state comprises the following steps: 1) determine whether fuel door is opened, 2) when fuel door is opened, monitoring pressure of storage tank, 3) if pressure of storage tank change is equal to or greater than reference value, then determine that filling hydrogen starts, wherein pressure of storage tank be changed to fuel door open before and after pressure difference, and 4) when closed determined when fill hydrogen stops by detecting fuel door.
(formula 1) calculates the internal hydrogen purity of hydrogen storage tank as follows:
formula 1:
Wherein A represents the inside initial pressure of hydrogen storage tank, and B represents the pressure of hydrogen storage tank after filling hydrogen, and X1 represents the hydrogen concentration before filling hydrogen, and X2 represents the concentration of filled hydrogen, and X
crepresent the hydrogen concentration after filling hydrogen.Hydrogen concentration (X after filling hydrogen
c) be the value of the internal hydrogen purity of hydrogen storage tank.The hydrogen purification cycle (the step b of above disclosed method) according to calculated hydrogen purity adjustment hydrogen storage tank can be further comprising the steps: 1) compare calculated internal hydrogen Reinheitszahl and reference value, and 2) the hydrogen purification cycle is set, make to work as the execution frequency of hydrogen purification when hydrogen purity value that when calculated hydrogen purity value is equal to or greater than reference value, the execution frequency of hydrogen purification is calculated than working as is less than reference value little.
If the quantity of electric charge generated reaches reference charge amount, purge valve then for hydrogen purification can open a period of time, and when hydrogen purity value is less than reference value and when hydrogen purity value is equal to or greater than reference value, reference charge amount is respectively set to mutually different different values, and the opening time of purge valve is set to equal time in each case simultaneously.
In addition, if hydrogen purity value is less than reference value, then reference charge amount can be set to the first reference charge amount, and if hydrogen purity value is equal to or greater than reference value, then reference charge amount can be set to the second reference charge amount, and wherein the second reference charge amount is set to larger than the value of the first reference charge value.The opening time of purge valve can be set to be selected from the value in 0.1 second to 1.0 seconds scope.
Further, in the hydrogen purification cycle adjusting hydrogen storage tank according to calculated hydrogen purity, can from the purification cycle mapping graph determination hydrogen purification cycle, this purification cycle mapping graph comprises the internal hydrogen purity and the data in hydrogen purification cycle that are mapped with hydrogen storage tank.
In addition, purification cycle mapping graph can be set to shorten purification cycle when hydrogen purity reduces.
In addition, purification cycle mapping graph can be set to when hydrogen purity reduces time delay long dozen ETAD expected time of arrival and departure.
According to another aspect of the present invention's design, be provided for the device of the purification controlled in hydrogen storage system.This device comprise hydrogen storage tank, for hydrogen purification in hydrogen storage tank purge valve and adjustment the hydrogen purification cycle controller.Controller calculates the internal hydrogen purity of hydrogen storage tank, and adjusts the purification cycle of hydrogen storage tank based on calculated internal hydrogen purity.
In addition, pressure transducer can be provided further for measuring the internal pressure of hydrogen storage tank.Controller based on the internal hydrogen purity using the formula 1 of the force value of filling before and after hydrogen to determine hydrogen storage tank, wherein can receive this force value from pressure transducer,
formula 1
Wherein respectively, A represents the inside initial pressure of hydrogen storage tank, and B represents the pressure of hydrogen storage tank after filling hydrogen, and X1 represents the hydrogen concentration before filling hydrogen, and X2 represents the concentration of filled hydrogen, and X
crepresent the hydrogen concentration after filling hydrogen.Hydrogen concentration (X after filling hydrogen
c) be the value of the internal hydrogen purity of hydrogen storage tank.
In addition, fuel door sensor can be provided further for detecting the opening/closing state of fuel door.If the open mode of fuel door detected, then controller can monitor pressure of storage tank, if the pressure of storage tank changing value occurred before and after opening fuel door is equal to or greater than reference value, then determines that filling hydrogen starts, and if fuel door is closed, then determine that filling hydrogen stops.
In addition, the reference value that controller can compare hydrogen purity and the internal hydrogen Reinheitszahl calculated, and adjusting purification cycle, the execution making to work as hydrogen purification when calculated hydrogen purity value is less than reference value is more frequent compared with working as the execution of hydrogen purification when calculated hydrogen purity value is equal to or greater than reference value.
In addition, if the quantity of electric charge generated in battery pile reaches reference charge amount, then purge valve can control as opening a period of time by controller, and work as when calculated hydrogen purity value is less than reference value and work as calculated hydrogen purity value when being equal to or greater than reference value, be set to mutually different values respectively with reference to the quantity of electric charge, the opening time of purge valve can be set to equal time in each case simultaneously.
In addition, if hydrogen purity value is less than reference value, then reference charge amount can be set to the first reference charge amount, and if hydrogen purity value is equal to or greater than reference value, then reference charge amount can be set to the second reference charge amount, wherein the second reference charge amount is set to larger than the value of the first reference charge value, and the opening time of purge valve is set to be selected from the value in 0.1 second to 1.0 seconds scope.
In addition, controller can comprise purification cycle mapping graph, and can based on purification cycle mapping graph determination purification cycle, and wherein purification cycle mapping graph comprises and is mapped with the internal hydrogen purity of hydrogen storage tank and the data of purification cycle.
In addition, purification cycle mapping graph can be set to shorten purification cycle when hydrogen purity reduces.
Or purification cycle mapping graph can be set to when hydrogen purity reduces time delay long dozen ETAD expected time of arrival and departure.
As mentioned above, conceive according to the present invention for controlling in the devices and methods therefor of the purification in hydrogen storage system, the internal hydrogen purity based on hydrogen storage system calculates purification cycle, makes to determine purification timing, thus realizes best hydrogen purification.
In addition, according to the conventional method by using current sinking to determine to purify timing, must perform the process strengthening hydrogen purity in the manufacture process of storage tank system or the initial operation process of storage tank system, it needs long-time and high cost.But, according to the present invention's design, the process strengthening hydrogen purity can be omitted, make the cost of production that can reduce hydrogen storage system, and the time manufactured needed for hydrogen storage system can be reduced.
Accompanying drawing explanation
Describe the above and other feature of the present invention's design with reference to its some exemplary embodiment illustrated by appended accompanying drawing in detail, wherein provide embodiment by means of only illustrational mode hereinafter, and therefore do not limit the present invention's design, and wherein:
Fig. 1 is the schematic diagram of the device for controlling the purification in hydrogen storage system of the exemplary embodiment illustrated according to the present invention's design;
Fig. 2 is the flow chart of the method for controlling the purification in hydrogen storage system of the exemplary embodiment schematically shown according to the present invention's design;
Fig. 3 illustrates the flow chart determining to inflate the process stopped according to the present invention's design when calculating hydrogen purity; And
Fig. 4 is the Conceptual Projection of the relation illustrated between the length of purification cycle and the hydrogen purity of hydrogen storage tank.
Should be understood that, appended accompanying drawing need not be drawn in proportion, but presents the reduced representation to a certain extent of the various preferred features of the basic principle that the present invention's design is described.The specific design feature of the present invention's design described herein, comprises such as concrete size, direction, position and shape, will partly be determined by specific set application and Environmental Conditions.
In the example shown, the some illustrated reference number running through accompanying drawing refers to the identical or equivalent elements of the present invention's design.
Embodiment
Owing to repeatedly filling hydrogen, the internal hydrogen purity of hydrogen storage system is converted into the purity of hydrogen injecting, and determines hydrogen purity according to the amount of filling hydrogen.
Because hydrogen purification is the process of discharging the impurity remained in hydrogen storage tank, therefore by using the internal hydrogen purity adjustment hydrogen purification cycle of hydrogen storage tank.
Therefore, the disclosure is provided for the devices and methods therefor of the purification controlled in hydrogen storage system, wherein measures the internal hydrogen purity of hydrogen storage system, and controls hydrogen purification changeably according to measured internal hydrogen purity, thus realizes best purification timing.
Hereinafter, the devices and methods therefor for controlling the purification in hydrogen storage system of an exemplary embodiment according to the present invention's design is described in detail with reference to appended accompanying drawing.
Fig. 1 is the schematic diagram of the device for controlling the purification in hydrogen storage system of the exemplary embodiment illustrated according to the present invention's design.
Embodiment according to Fig. 1, except the miscellaneous part of hydrogen storage system, outside such as hydrogen storage tank 10, pressure transducer 50, pressure regulator 20, fuel cell pack 30 and purge valve 40, device for controlling the purification in hydrogen storage system also comprises controller 60, to control purification cycle, and fuel door sensor 70, to detect the opening/closing state of fuel door.
Pressure transducer 50 inspection is stored in the pressure of the hydrogen in hydrogen storage tank 10, and the pressure of hydrogen is reduced to low pressure from high pressure by pressure regulator 20, and hydrogen is fed to fuel cell pack 30.
According to this embodiment, the device for controlling the purification in hydrogen storage system comprises the purge valve 40 for the hydrogen purification in hydrogen storage tank 10, and for adjusting the controller 60 in hydrogen purification cycle.
In this case, controller 60 is configured the internal hydrogen purity calculating hydrogen storage tank 10, and based on the purification cycle in calculated hydrogen purity adjustment hydrogen storage tank 10.
Adjustment purification cycle can comprise various operation, the amount of time that such as change purification frequency and adjustment purge valve are opened in each cycle, and it determines the gas flow purified in each cycle.
Therefore, those skilled in the art should be understood that, various embodiments for adjusting purification cycle are comprised for the devices and methods therefor controlling the purification in hydrogen storage system according to the present invention's design, it can include but not limited to, the amount of time that adjustment purification frequency and adjustment purge valve are opened during each purification cycle.
In addition, fuel door sensor 70 is by the information transmission of the opening/closing state about fuel door to controller 60, and based on the information of the internal pressure change about the opening/closing state of fuel door and hydrogen storage tank 10, controller 60 determines that inflation stops.
Therefore, controller 60 determines current hydrogen purity based on following message: a) about the information of the pressure change occurred before and after filling hydrogen and b) about the information of the hydrogen concentration before filling hydrogen.
Controller 60 controls the purification cycle of purge valve 40 subsequently based on calculated hydrogen purity.
When being described below the method for controlling the purification in hydrogen storage system in detail, the determination of hydrogen purity and purification control will be described.
Fig. 2 is the flow chart of the method for controlling the purification in hydrogen storage system of the exemplary embodiment schematically shown according to the present invention's design.
As shown in Figure 2, according to monitoring hydrogen purity (S110) and adjust purification cycle (S130) based on calculated hydrogen purity the comprising for the method controlling the purification in hydrogen storage system of exemplary embodiment of the present invention's design.
In an embodiment, monitored hydrogen purity value and the reference value (T of hydrogen purity is compared
p) (S120).
Two the hydrogen purity scopes divided based on reference value can be there are.Two hydrogen purity scopes can have the mutually different hydrogen purification cycles.
Therefore, according to the present embodiment, adjust the hydrogen purification cycle (S130) based on monitored hydrogen purity value with comparing of reference value.Fig. 2 illustrates embodiment, and wherein in the beginning of process, hydrogen storage tank has the internal hydrogen purity of the reference value lower than hydrogen purity.After comparing with the reference value of hydrogen purity (S120), if the hydrogen purity value of monitoring is equal to or greater than the reference value (YES) of hydrogen purity, then determines that purification controls reference state and changes, make adjustment hydrogen purification frequency.
But, comparing (S120) according to the reference value with hydrogen purity, if the hydrogen purity value of monitoring is less than the reference value of hydrogen purity, owing to maintaining identical state, so there is no necessary adjustment hydrogen purification frequency.Therefore, process turns back to the monitoring (S110) of hydrogen purification.
In another embodiment's (not shown), in the beginning of process, the internal hydrogen purity of hydrogen storage tank is greater than the reference value of hydrogen purity.In this case, if only adjust purification frequency when the hydrogen purity value of monitoring is less than the reference value of hydrogen purity, and if the reference value that the hydrogen purity value of monitoring is equal to or greater than hydrogen purity then maintains purification frequency.
In the monitoring (S110) of the hydrogen purity of Fig. 2, formula 1 can be used to calculate hydrogen purity.
formula 1
Wherein A represents the inside initial pressure of hydrogen storage tank, and B represents the pressure of hydrogen storage tank after filling hydrogen, and X1 represents the hydrogen concentration before filling hydrogen, and X2 represents the concentration of filled hydrogen, and X
crepresent the hydrogen concentration after filling hydrogen.
Calculate in equation 1 fill hydrogen after hydrogen concentration (X
c) become the internal hydrogen Reinheitszahl of hydrogen storage tank.
Therefore, according to the present embodiment for controlling in the method for the purification in hydrogen storage system, measure pressure A and B filled before and after hydrogen, and based on the hydrogen storage tank before filling measured force value before and after hydrogen and filling hydrogen internal hydrogen concentration (X1) and fill hydrogen concentration (X2) calculate the internal hydrogen Reinheitszahl of hydrogen storage tank.
Meanwhile, when filling hydrogen, hydrogen purity changes, and needs to measure the pressure filled before and after hydrogen, to calculate hydrogen purity.Therefore, according to the exemplary embodiment of the present invention's design, can comprise further and determine that hydrogen is to being filled with state in hydrogen storage system.
As shown in Figure 3, can based on the opening/closing state determination hydrogen of fuel door to being filled with state in hydrogen storage system.
Particularly, hydrogen comprises to the determination of the state that is filled with in hydrogen storage system the opening/closing state (S210) responding to fuel door, determines the open mode (S220) of fuel door, and monitoring pressure of storage tank (S230).In this case, the monitoring of pressure of storage tank is performed for getting rid of the situation of not filling hydrogen after fuel door is opened.Therefore, if the pressure of storage tank of monitoring represents the value being greater than reference value, then determine that filling hydrogen starts (S240 and S250).If inflation stops and fuel door is closed, then determine that filling hydrogen stops (S260 and S270) completely.
If determine that filling hydrogen stops completely, the controller controlling the opening and closing of purge valve receives the internal pressure value of the hydrogen storage tank filled before and after hydrogen, with the internal hydrogen purity by above process computation hydrogen storage system.
According to embodiment, the hydrogen purity value obtained by above process and the reference value of hydrogen purity are compared, and control the hydrogen purification cycle according to comparative result.Such as, in certain embodiments, the frequency in hydrogen purification cycle can be controlled according to comparative result.In certain embodiments, the opening time of the purge valve also during controlled hydrogen manufacturing purification cycle.
By considering that hydrogen purity is to control the hydrogen purification cycle in this way, namely the execution frequency of hydrogen purification when previous calculated hydrogen purity value is more than or equal to reference value, less than the execution frequency of the hydrogen purification when hydrogen purity value is less than reference value.
Additionally or alternatively purification cycle can be controlled based on the quantity of electric charge generated from fuel cell pack 30.Purification cycle can be set by this way, if the quantity of electric charge namely generated reaches reference charge amount, then purge valve be opened one section of opening time.
Especially, conceive according to the present invention for controlling in the method for the purification in hydrogen storage system, when calculated hydrogen purity value be less than reference value and work as calculated hydrogen purity value be equal to or greater than reference value time, hydrogen purification must be performed as mutually different groups cycle time respectively.
For this reason, preferably, when hydrogen purity value is less than reference value and when hydrogen purity value is equal to or greater than reference value, reference charge amount is respectively set to mutually different values, and the opening time of purge valve is set to equal time in each case simultaneously.
If hydrogen purity value is less than reference value, then reference charge amount can be set to the first reference charge amount, and if hydrogen purity value is equal to or greater than reference value, then reference charge amount can be set to the second reference charge amount being different from the first reference charge amount.If be set to mutually different values with reference to the quantity of electric charge as mentioned above for two kinds of situations, then the opening time of purge valve can be selected from the scope of 0.1 second to 1.0 seconds, and can be set to same time in each case.
Therefore, when hydrogen purity is less than reference value, the quantity of electric charge generated in fuel cell pack reaches the first reference charge amount, and purge valve opens the opening time of one section of purge valve.When hydrogen purity is equal to or greater than reference value, the quantity of electric charge generated in fuel cell pack reaches the second reference charge amount, and purge valve opens the opening time of one section of purge valve.In this case, the second reference charge amount must be set to larger than the value of the first reference charge amount.
As mentioned above, can provide another embodiment, wherein the opening time of purge valve can be set to different value, to control purification cycle.
Meanwhile, also according to another embodiment of the present invention's design, by the purification cycle mapping graph for controlling purification cycle to control purification cycle.It is inner that purification cycle mapping graph is stored in control ROM, and this control ROM uses the mapping value determination purification cycle based on calculated hydrogen purity.As shown in Figure 4, hydrogen purity reduces along with the reduction of purification cycle length.If increase purification cycle, then hydrogen purity will increase.
Can purification cycle mapping graph be set by this way, namely when hydrogen purity reduces, shortens the opening time of purification cycle or prolongation purge valve.
Therefore, purification cycle mapping graph can comprise the various opening times of various reference charge value and purge valve.
As mentioned above, conceive according to the present invention for controlling in the devices and methods therefor of the purification in hydrogen storage system, can hydrogen purity be monitored and the purification cycle of purge valve can be controlled based on monitored hydrogen purity value.Therefore, owing to there is no need that hydrogen purity is maintained predeterminated level place, therefore can omit when the initial operation of the manufacture of such as hydrogen storage tank or hydrogen storage tank the process strengthening hydrogen purity.
Although described the present invention's design hereinbefore in detail, the scope of the present invention's design has been not limited to this description.The various amendments using the basic inventive concept of basis defined as claim to make by those skilled in the art also drop in the scope of the present invention's design.
Claims (19)
1. control a method for the purification in hydrogen storage system, said method comprising the steps of:
Calculate the internal hydrogen purity of hydrogen storage tank; And
The hydrogen purification cycle of described hydrogen storage tank is adjusted according to described calculated internal hydrogen purity.
2. method according to claim 1, also comprised the step of determining to fill hydrogen state, and if determine to stop filling the internal hydrogen purity that hydrogen then calculates described hydrogen storage tank before the step of internal hydrogen purity calculating described hydrogen storage tank.
3. method according to claim 2, wherein uses formula 1 to calculate the internal hydrogen purity of described hydrogen storage tank:
formula 1
Wherein A represents the inside initial pressure of described hydrogen storage tank, and B represents the pressure of described hydrogen storage tank after filling hydrogen, and X1 represents the hydrogen concentration before filling hydrogen, and X2 represents the concentration of filled hydrogen, and X
crepresent the hydrogen concentration after filling hydrogen, and the described hydrogen concentration X after wherein filling hydrogen
cfor the value of the internal hydrogen purity of described hydrogen storage tank.
4. method according to claim 2, wherein saidly determine that the step of filling hydrogen state comprises:
Detect the open mode of fuel door;
When described fuel door is opened, monitoring pressure of storage tank;
If pressure of storage tank change be equal to or greater than reference value, then fill hydrogen described in determining and start, wherein said pressure of storage tank be changed to described fuel door open before and after pressure difference; And
Detect the closed condition of described fuel door, fill hydrogen described in instruction and stop.
5. method according to claim 1, the wherein said step adjusting the hydrogen purification cycle of described hydrogen storage tank according to calculated hydrogen purity comprises: compare calculated internal hydrogen Reinheitszahl and reference value, and the hydrogen purification cycle is set, to make to work as when calculated hydrogen purity value is less than described reference value compared with working as when calculated hydrogen purity value is equal to or greater than described reference value, perform hydrogen purification more continually.
6. method according to claim 5, if the quantity of electric charge wherein generated reaches reference charge amount, then open the purge valve a period of time for hydrogen purification, and when described hydrogen purity value is less than described reference value and when described hydrogen purity value is equal to or greater than described reference value, described reference charge amount is set to mutually different different values respectively, the opening time of described purge valve is set to equal time in each case simultaneously.
7. method according to claim 6, if wherein described hydrogen purity value is less than described reference value, then described reference charge amount is set to the first reference charge amount, and if described hydrogen purity value is equal to or greater than described reference value, then described reference charge amount is set to the second reference charge amount, wherein said second reference charge amount is the value being greater than described first reference charge value, and the opening time of described purge valve is be selected from the value in 0.1 second to 1.0 seconds scope.
8. method according to claim 1, the wherein said step adjusting the hydrogen purification cycle of described hydrogen storage tank according to calculated hydrogen purity comprises determines the described hydrogen purification cycle from purification cycle mapping graph, and described purification cycle mapping graph comprises the internal hydrogen purity and the data in hydrogen purification cycle that are mapped with described hydrogen storage tank.
9. method according to claim 8, wherein said purification cycle mapping graph is set to shorten described purification cycle when described hydrogen purity reduces.
10. method according to claim 8, wherein said purification cycle mapping graph is set to extend described opening time when described hydrogen purity reduces.
11. 1 kinds for controlling the device of the purification in hydrogen storage system, described device comprises:
Hydrogen storage tank;
For the purge valve of the hydrogen purification in described hydrogen storage tank; And
For adjusting the controller in hydrogen purification cycle,
Wherein said controller calculates the internal hydrogen purity of described hydrogen storage tank, and adjusts the purification cycle of described hydrogen storage tank based on calculated internal hydrogen purity.
12. devices according to claim 11, also comprise pressure transducer to measure the internal pressure of described hydrogen storage tank, wherein said controller uses the formula 1 based on the force value of filling before and after hydrogen to calculate the internal hydrogen purity of described hydrogen storage tank, wherein receive described force value from described pressure transducer
formula 1
Wherein A represents the inside initial pressure of described hydrogen storage tank, and B represents the pressure of described hydrogen storage tank after filling hydrogen, and X1 represents the hydrogen concentration before filling hydrogen, and X2 represents the concentration of filled hydrogen, and X
crepresent the hydrogen concentration after filling hydrogen.
13. devices according to claim 12, also comprise fuel door sensor to detect the opening/closing state of fuel door, if the open mode of described fuel door wherein detected, then described monitoring control devices pressure of storage tank, if the pressure of storage tank changing value occurred before and after opening described fuel door is equal to or greater than reference value, then determine that filling hydrogen starts, and if described fuel door is closed, then determine that filling hydrogen stops.
14. devices according to claim 11, the reference value that wherein said controller compares hydrogen purity and the internal hydrogen Reinheitszahl calculated, and adjust purification cycle, to make to work as when calculated hydrogen purity value is less than described reference value compared with working as when calculated hydrogen purity value is equal to or greater than described reference value, perform hydrogen purification more continually.
15. devices according to claim 14, if the quantity of electric charge wherein generated in battery pile reaches reference charge amount, then described purge valve controls as opening a period of time by described controller, and work as when calculated hydrogen purity value is less than described reference value and work as calculated hydrogen purity value when being equal to or greater than described reference value, be set to mutually different values respectively with reference to the quantity of electric charge, the opening time of described purge valve be set to equal time in each case simultaneously.
16. devices according to claim 15, if wherein described hydrogen purity value is less than described reference value, then described reference charge amount is set to the first reference charge amount, and if described hydrogen purity value is equal to or greater than described reference value, then described reference charge amount is set to the second reference charge amount, wherein said second reference charge amount is set to larger than the value of described first reference charge value, and is set to by the opening time of described purge valve be selected from the value in 0.1 second to 1.0 seconds scope.
17. devices according to claim 11, wherein said controller comprises purification cycle mapping graph, and determine described purification cycle based on described purification cycle mapping graph, described purification cycle mapping graph comprises and is mapped with the internal hydrogen purity of described hydrogen storage tank and the data of purification cycle.
18. devices according to claim 17, wherein said purification cycle mapping graph is set to shorten described purification cycle when described hydrogen purity reduces.
19. devices according to claim 17, wherein said purification cycle mapping graph is set to extend described opening time when described hydrogen purity reduces.
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| KR1020130166674A KR101519764B1 (en) | 2013-12-30 | 2013-12-30 | Apparatus for controlling purging in a hydrogen storage system and method for the same |
| KR10-2013-0166674 | 2013-12-30 |
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| US (1) | US10211471B2 (en) |
| JP (1) | JP6556449B2 (en) |
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| Publication number | Publication date |
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| JP6556449B2 (en) | 2019-08-07 |
| US10211471B2 (en) | 2019-02-19 |
| KR101519764B1 (en) | 2015-05-12 |
| US20150188165A1 (en) | 2015-07-02 |
| JP2015130339A (en) | 2015-07-16 |
| CN104747909B (en) | 2019-06-25 |
| DE102014227007A1 (en) | 2015-07-02 |
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